Preparation of Tungsten Carbide/Stainless Steel Functionally Graded Materials by Pulsed Current Sintering
Preparation of Tungsten Carbide/Stainless Steel Functionally Graded Materials by Pulsed Current Sintering
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DOI：
10.4028/www.scientific.net/ssp.127.179
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发表时间：
2007-08
期刊：
影响因子：
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通讯作者：
Y. Kawakami;F. Tamai;T. Enjoji;K. Takashima;M. Otsu
中科院分区：
文献类型：
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作者：
Y. Kawakami;F. Tamai;T. Enjoji;K. Takashima;M. Otsu
本研究将功能梯度技术应用于碳化钨合金（WC-Co合金）-奥氏体不锈钢的制备，以提高其耐蚀性和耐磨性，降低其制造成本。采用脉冲电流烧结（PCS）法制备了两种类型的试样。一种是由WC合金（WC-20 wt% Co, WC-20 wt% Fe-46Ni）粉末和SUS316L不锈钢粉末加工而成，为“粉/粉工艺”。另一种是由预烧结WC合金和SUS316L板材制成，并指定为“散装/散装工艺”。两种类型的标本都有四个功能分级的层。采用三点弯曲试验评价了试样的力学性能，并对试样的显微组织进行了观察。虽然获得了适当的体/体工艺试样的抗弯强度，但最佳烧结条件对烧结温度和功能梯度层敏感。
In this investigation, functionally graded technique has been applied to prepare tungsten Carbide alloys (WC-Co alloys)-austenitic stainless steel to improve corrosion and wear resistance and reduce their fabrication costs. Two types of specimens were prepared by Pulsed Current Sintering (PCS) method. One is fabricated from WC alloy (WC-20 wt% Co, WC-20 wt% Fe-46Ni) powder and SUS316L stainless steel powder, and is designated “powder / powder process“. The other is fabricated from pre-sintered WC alloy and SUS316L plate, and is designated “bulk / bulk process”. Both types of specimens have four functionally graded layers. Mechanical properties of these specimens were evaluated by three points bending test, and microscopy observations were made to their microstructures. Although the proper bending strength of bulk / bulk process specimen was obtained, the optimum sintering condition is sensitive to the sintering temperature and function graded layers.