摘要
提出了一种新颖的制备梯度硬质合金材料的方法,其优点是将不含η相、钴均匀分布的硬质合金基体在一定的气氛中进行渗碳处理,从而在其表面得到一定厚度、外硬内韧的梯度硬质合金材料,其心部结构均匀且不存在η相,不降低硬质合金原材料的性能,同时其制备方法简单,有利于工业化生产和批量应用。研究了渗碳温度、渗碳时间和渗碳气氛对硬质合金齿梯度层厚度的影响。结果表明,随着梯度处理温度的升高,硬质合金齿梯度层厚度就越大;当硬质合金齿梯度处理时间短时,硬质合金齿不会形成梯度层,随着时间的增加,梯度层厚度也会增加;随着硬质合金齿梯度处理甲烷流量的增加,梯度层厚度也会随之增加。
This paper presents a new method for preparation of gradient carbide material,its advantage is to carburize the carbide matrix without containingηphase and with uniform distribution of cobalt on at a certain atmosphere.Thus,the gradient carbide material with a certain thickness and external hard and internal toughness is obtained on the surface thereof.The core structure is even without containingηphase and the performance of its raw materials is not reduced.At the same time,its preparation method is simple,which is beneficial for industrial production and batch application.The effects of carburizing temperature,time and its atmosphere on the thickness of carbide are studied.The results show that the thickness of carbide insert is larger with the increase of the gradient temperature;when the processing time of carbide insert is short,the carbide insert would not form gradient layer,and the thickness of the gradient layer is increased with the increase of time;the thickness of the gradient layerwould be increased with the increase of the flow rate of methane.
出处
《长江大学学报（自然科学版）》
CAS
2017年第9期33-37,共5页
Journal of Yangtze University(Natural Science Edition)
基金
国家科技重大专项(2016ZX05038-005)
关键词
梯度硬质合金齿
渗碳处理
梯度层厚度
carburizing
gradient carbide insert
thickness of gradient layer
