High-temperature wear behavior of self-lubricating Co matrix alloys prepared by P/M
High-temperature wear behavior of self-lubricating Co matrix alloys prepared by P/M
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粉末冶金自润滑钴基合金的高温磨损行为
DOI：
10.1016/j.wear.2015.11.009
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发表时间：
2016-01-15
期刊：
影响因子：
5
通讯作者：
Wu, Guoxiong
中科院分区：
文献类型：
--
作者：
Cui, Gongjun;Han, Junrui;Wu, Guoxiong
为了平衡Co基合金的高温强度和润滑性能，采用粉末冶金技术制备了添加Mo和银的Co-Cr基高温自润滑合金。采用球-盘高温摩擦磨损试验机，在10 N、0.19 m/s的载荷下，从室温到1000 ℃，研究了合金与Si 3 N4陶瓷球摩擦副的高温摩擦学行为。Cr、Mo元素对基体表现出固溶强化作用。在较宽的温度范围内，Mo含量为8wt%，Ag含量为9wt%的试样具有最佳的摩擦学性能。在所有试验温度下，良好的摩擦学性能归因于硬度和固体润滑剂（包括Ag、金属氧化物、铬酸盐和柠檬酸盐）的共同作用。(C)2015 Elsevier B. V.版权所有。
In order to balance the strength and lubricating properties of Co matrix alloy at high temperature, Co-Cr matrix high-temperature self-lubricating alloys with addition of molybdenum and silver were fabricated by powder metallurgy technology. The high-temperature tribological behavior of alloys sliding against Si3N4 ceramic ball were investigated by using a ball-on-disc high-temperature tribometer at 10 N and 0.19 m/s starting from room temperature to 1000 degrees C. Cr and Mo element showed the solid solution strengthening effect on the matrix. The specimen with 8 wt% Mo and 9 wt% Ag showed the best tribological properties over a wide temperature range. The favorable tribological properties were attributed to the combined action of hardness and the solid lubricants including Ag, metal oxides, molybdates and chromates at all the tested temperatures. (C) 2015 Elsevier B.V. All rights reserved.