Hot Isostatic Pressing Technology
- Details
- Category: Molybdenum knowledge
- Published on 15 August 2014
- Written by ling
- Hits: 456
In recent years, powder sintering technique after another. Field activated sintering (FAST) is generated by applying a low voltage (~ 30V) and high current (> 600A) of the electric field during the sintering process, and the DC pulse discharge to achieve the same time, to achieve the electric field activated sintering, to obtain a significant refinement of microstructure , significantly lower the sintering temperature, sintering time is shortened purposes. Selective Laser Sintering (SLS) applications layered manufacturing method, first performed on three-dimensional computer model to meet the needs of CAD and then layered software model stratification, get each cross-section, and then automatic control technology, the laser selectively sintering the computer corresponding to the inner cross section of the part of the powder fraction, tiered sintering.
In theory, these sintering technology has high academic value, but most still in the laboratory stage, can only be used for small quantities of small size sintering molybdenum products, there is a great distance from the applied research industry. Molybdenum sintering technology has some prospect of major industrial application of microwave sintering technology, hot isostatic pressing, spark plasma sintering technology, aluminum thermal reduction - Sintering - body technology, following a general introduction pressure sintering techniques.
Pressure sintering (hot pressing) technology is a pressing mechanical energy and molybdenum consolidation technology, sintering hot isostatic pressing under heat coupling is one of the most successful processes. On the sintered density, porosity and other organizational uniformity and index requirements sintering molybdenum sintering relatively high-end products such as TFT-LCD with molybdenum sputtering targets, most countries using hot isostatic pressing technology, its product quality is much higher than traditional the cold isostatic pressing - no pressure sintering process, China is no similar reports of the production process.
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