CN105779825A - 一种TiAl合金自润滑材料及其制备方法 - Google Patents

一种TiAl合金自润滑材料及其制备方法 Download PDF

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CN105779825A
CN105779825A CN201610159852.4A CN201610159852A CN105779825A CN 105779825 A CN105779825 A CN 105779825A CN 201610159852 A CN201610159852 A CN 201610159852A CN 105779825 A CN105779825 A CN 105779825A
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ti2aln
tial alloy
lubricating material
self
alloy self
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CN105779825B (zh
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张树志
张长江
张静
侯赵平
赵玉彬
徐萌
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Taiyuan University of Technology
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/04—Making non-ferrous alloys by powder metallurgy
    • C22C1/05—Mixtures of metal powder with non-metallic powder
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/12—Both compacting and sintering
    • B22F3/14—Both compacting and sintering simultaneously
    • B22F2003/145—Both compacting and sintering simultaneously by warm compacting, below debindering temperature
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
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Abstract

本发明涉及TiAl合金自润滑领域，具体是一种TiAl合金自润滑材料及其制备方法。一种TiAl合金自润滑材料，由质量百分比的材料组成Ti‑45Al‑8Nb 90%‑98%,Ti2AlN 2%‑10%,其中，Ti‑45Al‑8Nb中原子比为Ti：Al：Nb=1:45:8，Ti2AlN中原子比为Ti：Al：N=2:1:1。本发明的有益效果是：1、采用Ti‑45Al‑8Nb合金的合金粉末，对比与采用Ti粉及Al粉的元素粉末，可以制备致密的TiAl合金自润滑材料，消除Al元素向Ti元素的偏扩散造成的空洞；2、所有工艺均在真空下进行，有效的降低了含氧量，消除了仰致脆化，提高了TiAl合金自润滑材料的性能；3、热压烧结工艺简单，操作方便，周期短，效率高。

Description

一种TiAl合金自润滑材料及其制备方法
技术领域
本发明涉及TiAl合金自润滑领域，具体是一种TiAl合金自润滑材料及其制备方法。
背景技术
TiAl合金具有良好的摩擦，耐高温，耐腐蚀性能，在机械行业和石化领域具有良好的应用前景，但其润滑性能较差，为了进一步改善TiAl合金的摩擦性能，提高TiAl合金的润滑能力，添加Ti2AlN纳米颗粒作为自润滑相，将TiAl合金合金粉末及Ti2AlN纳米颗粒通过热压烧结制备成含有Ti2AlN纳米颗粒的TiAl合金自润滑材料，显著提高TiAl合金的润滑效果，提高TiAl合金的耐磨性能，对TiAl合金在摩擦磨损领域的工程应用具有重大意义。
发明内容
本发明所要解决的技术问题是：如何提供一种具有良好自润滑功能的TiAl合金及其制备方法。
本发明所采用的技术方案是：一种TiAl合金自润滑材料，由以下质量百分比的材料组成
Ti-45Al-8Nb90%-98%
Ti2AlN2%-10%
其中，Ti-45Al-8Nb中原子比为Ti：Al：Nb=1:45:8，Ti2AlN中原子比为Ti：Al：N=2:1:1。
制备一种TiAl合金自润滑材料的方法，按照如下的步骤进行：
步骤一、称取Ti-45Al-8Nb和Ti2AlN，Ti2AlN的质量百分比含量为2%-10%，并放入行星球磨机内进行混料，混料时间为2-4小时；
步骤二、将步骤一中混合好的材料装入304不锈钢包套内，并封装处理，在热压烧结炉内进行烧结，烧结温度为1100-1200℃，压强为200-300Mpa，时间为3-4小时。
作为一种优选方式：步骤一中，Ti-45Al-8Nb合金粉末粉末粒度小于100μm，氧含量低于700ppm，Ti2AlN纳米颗粒粒度在50-200nm之间。
本发明的有益效果是：1、采用Ti-45Al-8Nb合金的合金粉末，对比与采用Ti粉及Al粉的元素粉末，可以制备致密的TiAl合金自润滑材料，消除Al元素向Ti元素的偏扩散造成的空洞；2、所有工艺均在真空下进行，有效的降低了含氧量，消除了仰致脆化，提高了TiAl合金自润滑材料的性能；3、热压烧结工艺简单，操作方便，周期短，效率高。
具体实施方式
实施例1
1、把Ti-45Al-8Nb合金和Ti2AlN纳米颗粒粉碎，使Ti-45Al-8Nb合金粉末粉末粒度小于100μm，氧含量低于700ppm，Ti2AlN纳米颗粒粒度在50-200nm之间，在真空手套箱内秤取Ti-45Al-8Nb合金粉末及Ti2AlN纳米颗粒，Ti2AlN纳米颗粒的质量比为2%，并放入行星球磨机内进行混料，混料时间为2小时。
2、将混好的TiAl合金粉末及Ti2AlN纳米颗粒在真空手套箱内装入304不锈钢包套内，并封装处理。放入热压烧结炉内进行烧结，烧结温度为1100℃，压强为200Mpa，时间为3小时。
经HVS-1000型显微硬度计测试，实例1所制备的以Ti2AlN纳米颗粒为自润滑相的TiAl合金自润滑材料的硬度为5.8GPa，密度为4.2g/cm3。
实施例2
1、把Ti-45Al-8Nb合金和Ti2AlN纳米颗粒粉碎，使Ti-45Al-8Nb合金粉末粉末粒度小于100μm，氧含量低于700ppm，Ti2AlN纳米颗粒粒度在50-200nm之间，在真空手套箱内秤取Ti-45Al-8Nb合金粉末及Ti2AlN纳米颗粒，Ti2AlN纳米颗粒的质量比为5%，并放入行星球磨机内进行混料，混料时间为3小时。
2、将混好的TiAl合金粉末及Ti2AlN纳米颗粒在真空手套箱内装入304不锈钢包套内，并封装处理。在热压烧结炉内进行烧结，烧结温度为1150℃，压强为250Mpa，时间为3.5小时。
经HVS-1000型显微硬度计测试，实例2所制备的以Ti2AlN纳米颗粒为自润滑相的TiAl合金自润滑材料的硬度为5.9GPa，密度为4.3g/cm3。
实施例3
1、把Ti-45Al-8Nb合金和Ti2AlN纳米颗粒粉碎，使Ti-45Al-8Nb合金粉末粉末粒度小于100μm，氧含量低于700ppm，Ti2AlN纳米颗粒粒度在50-200nm之间，在真空手套箱内秤取Ti-45Al-8Nb合金粉末及Ti2AlN纳米颗粒，Ti2AlN纳米颗粒的质量比为2%-10%，并放入行星球磨机内进行混料，混料时间为2-4小时。
2、将混好的TiAl合金粉末及Ti2AlN纳米颗粒在真空手套箱内装入304不锈钢包套内，并封装处理。在热压烧结炉内进行烧结，首先快速把烧结温度升高到1100℃，然后给304不锈钢包套施加强磁场（3-5特斯拉），烧结温度以每分钟升高1-2℃提高到1200℃，然后停止强磁场，保持温度在1200℃烧结1小时，过程中压强始终保持在200-300Mpa，然后自然冷却，自动消除感应磁力，完成烧结经HVS-1000型显微硬度计测试，实例3所制备的以Ti2AlN纳米颗粒为自润滑相的TiAl合金自润滑材料的硬度为9GPa（远超过了实施例1和2的硬度），密度为4.4g/cm3。通过施加磁场进行控制，自润滑材料的TiAl合金内部形成了Ti网状结构，TiAl合金分子结构得以改善，增强了硬度，同时保存了良好的自润滑性能。

Claims (3)

1.一种TiAl合金自润滑材料，其特征在于：由以下质量百分比的材料组成
Ti-45Al-8Nb90%-98%
Ti2AlN2%-10%
其中，Ti-45Al-8Nb中原子比为Ti：Al：Nb=1:45:8，Ti2AlN中原子比为Ti：Al：N=2:1:1。
2.制备权利要求1所述的一种TiAl合金自润滑材料的方法，其特征在于按照如下的步骤进行：
步骤一、称取Ti-45Al-8Nb和Ti2AlN，Ti2AlN的质量百分比含量为2%-10%，并放入行星球磨机内进行混料，混料时间为2-4小时；
步骤二、将步骤一中混合好的材料装入304不锈钢包套内，并封装处理，在热压烧结炉内进行烧结，烧结温度为1100-1200℃，压强为200-300Mpa，时间为3-4小时。
3.根据权利要求2所述的制备一种TiAl合金自润滑材料的方法，其特征在于：步骤一中，Ti-45Al-8Nb合金粉末粉末粒度小于100μm，氧含量低于700ppm，Ti2AlN纳米颗粒粒度在50-200nm之间。
CN201610159852.4A 2016-03-21 2016-03-21 一种TiAl合金自润滑材料及其制备方法 Expired - Fee Related CN105779825B (zh)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107283124A (zh) * 2017-06-27 2017-10-24 太原理工大学 一种无包套热加工TiAl合金的方法

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CN101698362A (zh) * 2009-10-30 2010-04-28 华南理工大学 一种自润滑硬质纳米复合多层涂层及其制备方法
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CN102139370A (zh) * 2011-01-14 2011-08-03 广州有色金属研究院 一种Ti2AlC自润滑、耐热结构材料的制备方法
CN102174681A (zh) * 2010-12-31 2011-09-07 陕西科技大学 一种高纯Ti2AlNxC1-x固溶体材料及其制备方法
CN102418000A (zh) * 2011-12-14 2012-04-18 哈尔滨工业大学 一种三维网络状分布的Ti2AlN颗粒增强TiAl基复合材料及其制备方法

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101265109A (zh) * 2008-04-25 2008-09-17 北京交通大学 一种h相氮化铝钛陶瓷粉体的常压合成方法
JP2010236060A (ja) * 2009-03-31 2010-10-21 Hitachi Tool Engineering Ltd 窒化物分散Ｔｉ−Ａｌ系ターゲット及びその製造方法
CN101698362A (zh) * 2009-10-30 2010-04-28 华南理工大学 一种自润滑硬质纳米复合多层涂层及其制备方法
CN101716680A (zh) * 2009-12-15 2010-06-02 哈尔滨工业大学 一种Ti2AlN/TiAl复合材料组分精确调控的制备方法
CN102174681A (zh) * 2010-12-31 2011-09-07 陕西科技大学 一种高纯Ti2AlNxC1-x固溶体材料及其制备方法
CN102139370A (zh) * 2011-01-14 2011-08-03 广州有色金属研究院 一种Ti2AlC自润滑、耐热结构材料的制备方法
CN102418000A (zh) * 2011-12-14 2012-04-18 哈尔滨工业大学 一种三维网络状分布的Ti2AlN颗粒增强TiAl基复合材料及其制备方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107283124A (zh) * 2017-06-27 2017-10-24 太原理工大学 一种无包套热加工TiAl合金的方法

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