Everything You Need To Know About Alumina Ceramic

Alumina Ceramic offers superior insulation properties for electricity along with great wear and tear resistance and high hardness but has a comparatively lower strength and the fracture toughness. It is the most mature form of the engineering ceramics. Most of the Alumina Ceramics is generally white. Some of them might also be pink which has about eighty-eight percent of alumina or brown that has approximately ninety six percent of alumina. The colour of the ceramic comes from the impurities in the raw materials or from the sintering additives.

Alumina ceramics that have superior purity are best for the environment where in the resistance to corrosive substances or wear and tear is required. These ceramics are also used in areas where the temperatures are very high and resistance to it is required as this ceramic is known to have a great thermal stability. For the alumina wear parts, the alumina ceramic is the best material as the ability to resist heat and wear and tear makes the ceramic ideal for manufacturing of components that are wear resistant.

Alumina is known to be an excellent electrical insulator having resistance to very high electricity. The great thing about alumina is the fact that the resistance to electricity increases with the purity of it. The more pure alumina is, the higher the resistance would be. Alumina also has a very high melting point and high hardness. The mechanical strength starts to reduce when the temperature goes beyond 1000 C. Hence, the resistance to thermal shock reduces because of the huge coefficient of the thermal expansion.

The high resistance to corrosion in alumina is derived from a great chemical stability. Alumina is slightly soluble in alkaline and strong acid solutions and absolutely insoluble in water. The alumina with superior purity is the main choice for the components in a wide array of industrial applications because of its ability to resist chemical corrosion. It has been proved that the alumina has high resistance to the corrosion caused by chemicals because of the lower solubility in chemicals.

The alumina ceramic is blended with the additives that work on enhancing its properties. A great variety of shapes and sizes of the components can be produced by using several varieties of the processing methods of ceramic like net shape or machining. High thermal conductivity, high resistance to heat, great insulator of electricity and high resistance to corrosion are a few factors why alumina ceramics is favoured amongst many manufacturers.

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All You Need To Know About Ceramic Ferrule

The ceramic ferrule technology is growing in demand over the varied uses. They are of a little high price but make the things a deciding factor when it comes to choosing the items. This is actually the fiber and optical technology that is being promoted for the fiber-optic communications. They however make the cost lower without compromising with the performance. When you are talking about an optical connector the most important part is the ferrule.

The ceramic ferrules are durable. There is a much higher level of control over the dimension. They are good for using in the fiber applications. The zirconia material present in them enables a smooth polishing. Thus, there is a good surface finish. Use of modern technologies has made molding and machining of the ferrules more convenient that it had been earlier. They are proper for both single mode and multimode application.

They are used in the shell inlet and also in the tube like heat exchangers. These offer protection against the hot gases and abrasive particles. They are used in several industries. They are helpful for connecting the fibre optic cables.

Why zirconia is used

There are several advantages of using the zirconia material. They are crack free. The smoother finishes are achieved with smaller grains. The properties of it make it impact resistant.

Properties of ceramic ferrule:

• The ceramic ferrule is generally opaque.
• They need polishing.
• The ceramic ferrule has a higher bending strength than the normal glass materials.
• The expansion capacity is much lower than other materials.
• It provides strong contact with the optical connectors.
• The thermal expansion causes less stress.
• There are very less fibers present.
• A glass made ferrule is softer than others.
• The polishing costs of them are much less.

The single mode connectors have aligned fibre cladding in the centre axis. The width is within 2 micron. The connector whole diameter is matched carefully to the real fibre diameter. A large hole as an active alignment is used as an alternative.

If you are buying the single mode then do remember that it is a bit time consuming to assemble. Whereas the multimode ferrule connectors have a 128 micron outlet for a 125 micron fibre. So, between the two, the multi mode connectors are better options to choose. When you are thinking of buying them ensure that you buy from a reputed manufacturer so that you get value for money products.

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Everything About Sintered Silicon Carbide

Sintered silicon carbide, also known as self-sintered silicon carbide is the one that has no silica in it. It is produced by blending fine silicon carbide powder with the non-oxide sintering aids. Isostatic pressing, die pressing and injection moulding is used to form the powdered material. After the forming stage, the particles are sintered at very high temperatures of up to 2000°C.

The sintered silicon carbide has several key properties that differentiate it from the others.

• The density of the sintered carborundum is approximately the same as aluminium. It has a very low density of about 40 percent of steel.

• The sintered silicon has a great resistance to wear and tear in rather abrasive environments

• It is very hard and comes second after diamond

• It has a great resistance to corrosion in most environments of chemical

• The sintered silicon carbide has a rather low porosity

• It has an excellent thermal conductor and has a low thermal expansion meaning it provides resistance to thermal shocks.

Being a thermal conductor, it is one of the most used materials for making the design of mechanical seal face. It is hence used in hot oil applications and very hot water.

The sintered silicon carbide is used in radial or axial slide bearings, valving, face seals for gas, oil chemical pumps, and in equipment like dies and nozzles.

Applications of the sintered silicon carbide

Armour

The sintered carborundum is known for its low specific density that makes it appropriate to be used where there is a critical need of weight requirements. The material is known to perform efficiently as a ceramic material in the manufacturing of armour protection systems. The compressive strength, high hardness and elastic modulus provides it superior capability.

Heat Exchanger Tubes

The sintered carborundum tubes are used in the chemical process industry in the tube heat exchangers and shells. The tubes are approximately over four metres in length that are used in these applications.

Paper industry applications

The sintered carborundum is known for its good resistance to wear and corrosion. The material is known to have a hard surface that can be given highly smooth and polished finishes. This finish provides excellent compatibility with the forming fabrics and the coefficients of friction.

Process Industry Valve Application

The excellent resistance to corrosion of the material makes it great to be used for valve a

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Role Of Technology In Education

In the current world, technology plays a very big role. With every new day a new software, gadget or program is introduced into the market that claims to improve our lives in one way or another. However, it is important to know that despite the fact that technology plays a vital role in making our lives comfortable, it isn’t the only role it has.

Technology is growing its role in the education field also. The more technology advances, the more advantages it provides for students at every level.

Technology in education:

We can use a lot of tools in our classrooms to help our students understand what they are being taught. For example, projectors and screens can be used for the students who are visual learners. These projection screens connected to computers can be put in classrooms so that the students see their notes as and listen to the instructor teach altogether. There are a number of sites like Wikipedia, Google etc. that are providing online solution for many academic problems.

There is a number of very useful software that can be used to help the class curriculum. Students can be provided with quizzes, tests, activities and sample questions that could help the student’s progress with their learning process when they are not in the classroom.

Today, technology is being used to a good number of curriculum even those which do not belong to the technology and computers. Students make good use of computers to come up with presentations and also make good use of the internet to do research on different topics for their projects and papers.

Many students do parallel computer classes along with their education nowadays. This gives the guarantee that after completing their graduation, the students will not have any problems with using technology when they are out in their workplace or in their own business, which might help to make them more productive compared to a person who has no knowledge to a certain software or technology in school.

With the advancement in technology, students are getting more access to these types of educational opportunities. Every time something ‘advanced’ and ‘new’ is introduced into the market, the price of the existing technology goes down that makes it much more affordable in the educational set up even to those schools that might be having a lack of financial resources available to them.

Technology has grown to such a point that it can even help kids who are yet to begin their school. There are many educational systems and video games for the small children which help them in getting ready for school and in many conditions also give them a good start on their education.

There are a number of people who thinks that technology ‘spoils’ children. For example, they say that instead of sitting down and learning to know how to count, they will use a calculator. In spite of the fact that there are people who are making these types of arguments, the technology still remains to be a very important part of the society we live in today. By introducing it into our schools and classrooms, we will make sure that the students are equipped with much greater tools and knowledge to make their transition from school to the workplace in a very easy one. We need to realize the truth, technology is a reality in the world today and it has become essential in each and every part of our lives and education has without a doubt not been left behind. It is very beneficial in providing more knowledge to all our students and also on making them productive in the job market.

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Purpose of Education

Education—like democracy, free markets, freedom of the press, and “universal human rights” — is one of those subjects whose virtue is considered self-evident. So is the superiority of the industrially advanced countries in attaining them. Consequently, any package that arrives with one of these magic labels on it, automatically qualifies for the “green channel” at our entry ports. No questions asked. This uncritical acceptance has severely crippled our discussion of all these vital topics. For example in education most of our discussion centers around literacy statistics and the need to have so many graduates, masters, Phd’s, and so many professionals — engineers, doctors, etc.— in a given country based on the standards in the industrially advanced countries. The central issue of curriculum, and even more fundamental issue of the purpose of education normally do not attract our attention; they have already been decided by the “advanced’ countries for us and our job is only to follow in their footsteps to achieve their level of progress.

Indeed they have. In the “first” world, education has become an extension of the capitalist system. Its purpose is to provide qualified workforce for its machinery of production and eager consumers for its products. Stated in a more polished form, the purpose of education is to provide for the economic prosperity of a country. Similarly on a personal level today the purpose of education is to be able to earn a respectable living.

While earning halal living and providing for the economic well being of a country are certainly important Islamic goals as well, the linking of education to financial goals is extremely unfortunate. It turns the centers of learning into mere vocational centers in their outlook and spirit. It degrades education and through it the society.

To bring home the pivotal but forgotten role of education we need to recall that there is a fundamental difference between human beings and animals. Instincts and physical needs alone can bring ants, bees, or herds of beasts together to live in a perfectly functioning animal society. Human beings do not function that way. They are not constrained by nature to follow only those ways that are necessary for the harmonious operation of their society. If they are to form a viable, thriving society, they must chose to do so. What drives that choice is the sharing of common goals, beliefs, values and outlook on life. Without a common framework binding its members, a human society cannot continue to exist; it will disintegrate and be absorbed by other societies. Further, the society must ensure that the common ground will continue to hold from generation to generation. This is the real purpose of education. The education system of a society produces the citizens and leaders needed for the smooth operation of that society, now and into the future. Its state of health or sickness translates directly into the health or sickness of the society that it is meant to serve.

Today we find many internal problems — corruption, injustice, oppression, crippling poverty — everywhere we turn in the Muslim world. If we think about it, we may realize that most of these problems are man-made. Which is another way of saying that they are largely traceable, directly or indirectly, to the education system that produced the people who perpetuate the problems. The rulers who sell out to foreign powers and subjugate their people; the bureaucrats who enforce laws based on injustice; the generals who wage war against their own people; the businessmen who exploit and cheat; the journalists who lie, sensationalize, and promote indecencies, they are all educated people, in many cases “highly” educated people. Their education was meant to prepare them for the roles they are playing in real life. And it has, although in a very unexpected way!

The problem plagues all layers of society. Why are Muslim communities in the grip of so much materialism today? What should we expect when our entire education system is preaching the gospel of materialism? Why have we effectively relegated Islam to a small inconsequential quarter in our public life? Because that is precisely where our secular education system has put it. Why in our behavior toward each other we see so little display of Islamic manners and morals? Because our imported education system is devoid of all moral training. Why our societies are sick? Because our education system is sick.

This is the real crisis of education. Before we got into this mess by importing from the Colonial powers what was current and popular, education in our societies was always the means of nurturing the human being. Moral training, tarbiya, was always an inalienable part of it. The ustaz,(teacher), was not just a lecturer or mere professional, but a mentor and moral guide. We remembered the hadith then, “No father has given a greater gift to his children than good moral training.” [Tirmidhi]. Our education system was informed by this hadith. Our darul-ulooms still maintain that tradition but the number of students who pass through their gates is minuscule compared to the secular schools.

In the U.S. and Europe, the schools were started by the church. Later as forces of capitalism overtook them, they molded them into their image. Moral training was a casualty of that takeover. But capitalism and their political economy did need people trained to work under these systems. So citizenship training was retained as an important, though diminishing, component of the curriculum— a religion-free subset of the moral training it displaced. Whatever civility we see here is largely a result of that leftover component. The imported versions in the Muslim countries, though, had even that component filtered out. And the results are visible.

We can solve our problem once we realize our mistakes. The first purpose of our education system must be to produce qualified citizens and leaders for the Islamic society. Tarbiya, real Islamic moral training, must be an integral part of it. This must be the soul of our education, not a ceremonial husk. All plans for improving our education will be totally useless unless they are based on a full understanding of this key fact. This requires revamping our curricula, rewriting our textbooks, retraining our teachers, and realizing that we must do all this ourselves. We do have a rich history of doing it. Are we finally willing to turn to our own in-house treasures to redo education the way it should always have been?

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Modern Data Centre – A Foundation to Success

A Data Centre stores and manages data of any organisation. These days this is considered to be one of the most important management in any business. It promotes security and reliability of any information. Additionally, it operates with extreme efficiency enabling rapid and on-time operations. Thus, the need of a data centre is currently focused on for the stability and effective working of an organisation.

With emerging importance of an IT Centre, the need for service managers, engineers, project managers, specialists etc have drastically increased. To have a data centre with highest ratings in terms security, performance, and disaster management a well equipped and qualifies management team is highly important. Keeping up the requirement of a larger data centre usually turns out to be tricky due to pioneering technologies and service delivery models.

Few benefits offered are as mentioned below,

There are a number of benefits of a Data Centre as mentioned below:

1. Long term and secure data storage
The traditional way of data storage is not in vogue. Businesses look at the accessibility of data that is integrated and on-demand. With no compromise in terms of security, one can be consistent in meeting its objectives.

2. Up gradation and control over IT
The protocols and the management strategies can be made and modified as per the utilisation and the expected performance. It is far easier to controls the patterns and tracking the utilisation.

3. Full proof recovery options
Since the data can be conveniently backed by the server the vital components can easily be tracked and traced for the continuity of the process. It simplifies the entire process even in terms of any unforeseen circumstances.

4. Greater performance and management
Being compliant promotes long-term success. Thus monitoring and ensuring guidelines is important regardless of the size of the data. Eventually, it promotes smooth operations, dependability, and reduction of resources. All modern data centres and very careful about this,

Things to be considered in its workings

The success of an organisation invariably depends on how smooth the operations are whether small or big. Mentioned below are few points to be considered,

1. Continuous efforts in improvements in recovery and data protection should be considered as an integral part

2. A regular check on whether the back ups are working or not should be monitored to avoid any failure and effect on production systems

3. Optimisation of infrastructure to meet the specific needs and the trends of a data centre must be regularly upgraded

4. Tracking the effective synchronisation when the version moves from one to another

The term Data Centre can be a small set up or a multi-storage facility its workings, maintenance and facilities have to be designed in a way that enhances smooth workings of IT operations. Few of the most important or rather critical components of a Data Centre are:

1. The IT equipment in use
2. The electrical infrastructure
3. The utility grid
4. Monitoring configurations
5. Cooling options
6. Efficient and planned management

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