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Introduction Powder technology (P / T) processing has become an advanced important techniques, which many materials were produced by these processes . The most important reason to use ( P / T) that many materials are difficult to melt and cast, as for example ceramic materials, hard metals, cermets or refractory metals, Another reason for using powder technology may be that it is economically attractive to make mass production complex shaped structural parts by powder compaction and sintering, For other products, such as magnets or multilayer electronic devices, there are no practical alternative manufacturing process to that of powder technology production processes. The subject of ceramics covers a wide range of materials One recent attempts have been made to divide it into two parts:1) traditional ceramics. 2) Advanced ceramics. Traditional ceramics still represent a major part of the ceramics industry. Interest in recent years has focused on advanced ceramics that, with minor exception , have been developed with in that last 30 years or so. Advanced ceramics include ceramics for electrical, magnetic, electronic, Thermal and optical applications, and ceramics for structural applications at ambient as well as elevated temperatures. The development in ceramic technology led to extend this to include other binary and complex compounds of metals such as oxides, carbides, nitrides, borides and silicides. Ceramics are materials that have unique, high performance properties and characteristics, The traditional ceramic materials are made up of mainly inorganic nonmetallic compositions which have been formed by the action of heat on raw material, while advanced ceramic materials are made by complex thermal, chemical and mechanical routes. Some of the unique properties of ceramics include :- dimensional stability ouer a wide temperature range, high temperature resistance ( refractoriness), thermal shock resistance, extreme wear resistance, electrical insulation, chemical inertness, corrosion resistance at low and high temperatures, high mechanical strength, hardness properties. Many properties or combinations of properties which are not achievable with other classes of materials give ceramics enormous technical potential. The main obstacles that prevent the wider use of ceramics include insufficient reliability, reproducibility, and high cost. The physical basis of the processing steps is well established. However, the chemical reactions which occur during the high – temperature processing frequently influence the densification process and microstructure development of ceramics in an unpredictable way. Therefore, an ability to understand and control the chemical processes that occur during ceramic processing are necessary to advance and open up new uses for technical ceramics. The typical application for ceramics include the automotive, aerospace, power generation, thermocouple protection tubes and insulaters, semiconductor equipment components furnace tubes, wear components for the glass and metals industries, labware and process crucibles. Mechanical Processes powder preparation by mechanical disintegration widely employed in P / M. This is however a time – taking process rendering low yields. There are six methods of mechanical comminution of metals and alloys, as indicated above. 1) Machining This method is employed to produce filings, turnings. Scratchings, chips, etc. which are subsequently pulverized by crushing and milling. Since relatively coarse and bulky powders entirely free from fine particles are obtained by this method, it is particularly in suitable a very few special cases such as the production of magnesium powders for pyrotechnic applications (where the explosivenss and malliabilty of the powder would prohibit the use of other methods, beryllium powders, silver solders and dental alloys. The powder particles produced are of irregular shape. This method is highly expensive and therefore has a limited application. This is especially employed where cost is not excessive in relation to the cost of the metals themselves or where the choice of the method is considered auccessity as in the case of Mg. 2) crushing This method is mostly used for dis integration oxides ( subsequently reduced to metal powders) and brittle materials, Any type of crushing equipment such as a tamps; hammers, jaw crushers or gyratory crushes may be employed for crushing brittle materials. Various ferrous and non – ferrous alloys, can be heat treated in order to obtain a sufficiently brittle material which can be easily crushed into powder from. Some metals particularly titanium, zirconium, Vanadium, niobium and tantalum when heated to moderate temperature in hydrogen atmosphere are converted to brittle hydrides. The powder produced by this method are of angular shape which are subsequently comminuted by milling to attain the required fineness of the powder for processing by (P / M) technique.