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首页> 外文会议>3rd International Conference on High Temperature Capillarity HTC-2000, 3rd, Nov 19-22, 2000, Kurashiki, Japan >FACTOR INFLUENCING SURFACE OF HOT-PRESSED CERAMICS
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FACTOR INFLUENCING SURFACE OF HOT-PRESSED CERAMICS

机译：影响热压陶瓷表面的因素

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摘要

Ceramics from pure alumina, silicon nitride, titanium nitride and also based on alumina with SiC, Si_3N_4, SiO_2, ZrO_2, based on Si_3N_4 with Al_2O_3, Y_2O_3, TiN, Y_2O_3+Al_2O_3, Al_2O_3+AlN, Al_2O_3+AlN+TiN has been produced by hot-pressing under induction heating. The induction heating frequencies were 2.6 kHz, 0.5 MHz and 5.3 MHz. The original powders were obtained by different ways and had different purity and grain sizes. It has been demonstrated that hot-pressed ceramic materials from ultrafine powders can have modified surface layer. The color and size of this surface layer were changed by hot-pressing conditions and composition. Investigated aspects were: phase composition, grain sizes, content of oxygen, contamination with carbon, hardness, fracture toughness and wear of the materials on the surface and in the bulk of the samples.
机译：已生产出由纯氧化铝，氮化硅，氮化钛以及基于SiC的氧化铝，Si_3N_4，SiO_2，ZrO_2，基于具有Al_2O_3，Y_2O_3，TiN，Y_2O_3 + Al_2O_3，Al_2O_3 + AlN，Al_2O_3 + AlN + TiN的Si_3N_4的陶瓷通过感应加热下的热压。感应加热频率为2.6 kHz，0.5 MHz和5.3 MHz。原始粉末是通过不同的方法获得的，并且具有不同的纯度和粒度。已经证明，由超细粉末制成的热压陶瓷材料可以具有改性的表面层。该表面层的颜色和尺寸通过热压条件和组成而改变。研究的方面是：相组成，晶粒尺寸，氧含量，碳污染，硬度，断裂韧性和材料在表面和大部分样品中的磨损。

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