CN103726048B - 一种专用于连续波光纤激光熔覆的镍基合金粉末 - Google Patents
一种专用于连续波光纤激光熔覆的镍基合金粉末 Download PDFInfo
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- 239000000843 powder Substances 0.000 title claims abstract description 20
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- 238000005253 cladding Methods 0.000 title abstract description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 35
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 17
- 239000011651 chromium Substances 0.000 claims abstract description 12
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 11
- 229910052741 iridium Inorganic materials 0.000 claims abstract description 10
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims abstract description 10
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims abstract description 10
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052787 antimony Inorganic materials 0.000 claims abstract description 9
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052796 boron Inorganic materials 0.000 claims abstract description 9
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910010271 silicon carbide Inorganic materials 0.000 claims abstract description 9
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- BTBUEUYNUDRHOZ-UHFFFAOYSA-N Borate Chemical compound [O-]B([O-])[O-] BTBUEUYNUDRHOZ-UHFFFAOYSA-N 0.000 description 1
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Abstract
本发明公开了一种专用于连续波光纤激光熔覆的镍基合金粉末，按其重量百分比计，含有8-12%碳化硅，2-5%锑，3-5%氧化铝，3-5%铬，5-8％硼，1-2%铱，余量为镍。该镍基合金粉末专用于连续波光纤激光器的熔覆过程，可在基材的工模具表面形成一层组织致密，无气孔、裂纹、缩孔等缺陷，具有高硬度、高韧性、高耐腐蚀性的金属熔覆层。并且工艺简单、环保，无需预先热处理和事后热处理。
Description
技术领域
本发明涉及到一种合金粉末，尤其是一种专用于连续波光纤激光熔覆的镍基合金粉末。
背景技术
激光熔覆的原理就是利用高能激光束照射金属材料，使得其表面形成激光熔池,同时填注新的添加材料，待激光扫过之后一并冷却，由此在金属表面形成一层新的熔覆层。
然而，目前国内市场上几乎没有连续波光纤激光熔覆专用的金属粉末，通常所使用的合金粉末大多为专用于热喷涂的自熔合金粉末。如果将原本适用于热喷涂的自熔合金粉末直接用于光纤激光熔覆，由于能量源发生了巨大变化，合金粉末被热辐射、热传导的物理过程随着发生极大的改变，往往因为传热与熔融不均匀，造成裂纹、缩松、缩孔、气孔等一系列不良后果。因此，很多原本适用于热喷涂的自熔合金粉末不能直接用于光激光熔覆。因此，有必要研制出一种专门用于连续波光纤激光熔覆的金属合金粉末。
发明内容
本发明所要解决的技术问题是：提供一种专用于连续波光纤激光熔覆的镍基合金粉末，该镍基合金粉末专用于连续波光纤激光器的熔覆过程，可在基材表面形成一层组织致密，无气孔、裂纹、缩孔等缺陷，具有高硬度、高韧性、高耐腐蚀性的金属熔覆层。并且工艺简单、环保，无需预先热处理和事后热处理。
为了解决上述技术问题，本发明所采用的技术方案为：专用于连续波光纤激光熔覆的镍基合金粉末，按其重量百分比计，含有8-12%碳化硅，2-5%锑，3-5%氧化铝，3-5%铬，5-8％硼，1-2%铱，余量为镍。
专用于连续波光纤激光熔覆的镍基合金粉末的优选配比为，包含12%碳化硅，5%锑，3%氧化铝，5%铬，6％硼，2%铱，余量为镍。
本发明所述的金属合金粉末中的各种成分的作用：
镍（Ni）：作为合金粉末的骨料，在熔覆时彻底熔融，与熔融状态的金属基材一同形成激光熔池，以供其他元素或化合物在熔池中均匀分布后凝固成熔覆层；镍具有较强的耐腐蚀性，粉末中添加镍可以提高其抗拉强度，并且由于镍具有非常小的热膨胀系数，所以可以降低热裂纹的产生。
碳化硅（SiC）：作为添加材料，碳化硅具有较高的硬度和耐磨性，可以提高熔覆层金属的硬度和耐磨性。
锑（Sb）：熔点低，可用于降低合金粉末的熔点，从而可以减少能量输出。
氧化铝（Al2O3）：提高材料对激光的吸收率；线膨胀系数较低，可降低粉末的热胀系数，降低开裂敏感性，提高连续波激光的吸收率。
硼（B）：在合金粉末中起自行脱氧和造渣的作用，可以与进入熔池的氧元素优先形成硼酸盐，覆盖于熔池表面，防止液态金属过度氧化，还能降低合金的熔点，改善熔体对基体金属的润湿能力，对合金的流动性及表面张力产生有利的影响。
铬（Cr）：铬的性质稳定，所以它能提高材料的硬度、耐磨性和耐腐性；同时铬的线膨胀系数低，所以它能降低材料的热胀系数，从而降低开裂敏感性，减少裂纹。
铱（Ir）：作为一种稀有金属添加元素，由于铱本身具有很高的熔点、强度和硬度，所以它能提高材料的抗拉强度、耐热性和耐磨性，并且其本身化学性质稳定，能够提高合金粉末的耐腐蚀性。
本发明的有益效果为：本发明所述的镍基金属合金粉末，在连续波光纤激光熔覆中，对光纤激光具有较好的热吸收率；液态金属对基材的润湿能力较强，最后形成的熔覆层结构致密，无裂纹、缩孔、缩松、气孔等缺陷，具有高硬度、高塑韧性、高耐腐蚀性等优异的金属学性能；工艺简单，无需预先热处理及事后热处理。
具体实施例
下面通过实施例详细描述本发明所述的具体实施方案。
实施例一：
将按重量百分比为8%碳化硅，2%锑，3%氧化铝，3%铬，5％硼，1%铱，余量为镍，共称取500g样品，经制样后得到200-300目的镍基金属合金粉末。
实施例2
将按重量百分比为12%碳化硅，5%锑，5%氧化铝，5%铬，8％硼，2%铱，余量为镍的比例称取500g样品，经制样后得到200-300目的镍基金属合金粉末。
实施例3
将按重量百分比为12%碳化硅，5%锑，3%氧化铝，5%铬，6％硼，2%铱，余量为镍，共称取500g样品，经制样后得到200-300目的镍基金属合金粉末。
由实施例3配制得到的镍基金属合金粉末，在2000W连续波光纤激光功率，光斑尺寸10mm2，扫描速度15mm/s，送粉速率20g/min等工艺条件下，对基材为45号钢的工件表面进行激光熔覆处理，室温下，检测结果如下表所示：
Claims (2)
1.一种专用于连续波光纤激光熔覆的镍基合金粉末，按其重量百分比计，含有8-12%碳化硅，2-5%锑，3-5%氧化铝，3-5%铬，5-8％硼，1-2%铱，余量为镍。
2.如权利要求1所述的专用于连续波光纤激光熔覆的镍基合金粉末，其特征在于：包含12%碳化硅，5%锑，3%氧化铝，5%铬，6％硼，2%铱，余量为镍。
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| CN104923960A (zh) * | 2015-05-09 | 2015-09-23 | 安徽再制造工程设计中心有限公司 | 一种零部件焊接用Ni-CrC纳米焊层及其制备方法 |
| CN107354455B (zh) * | 2017-07-13 | 2018-05-11 | 山东胜利万德胜石油技术服务有限公司 | 一种激光熔覆粉末及制备方法 |
| JP7015976B2 (ja) * | 2018-03-01 | 2022-02-04 | 三菱マテリアル株式会社 | レーザー吸収率に優れた金属積層造形用銅合金粉末 |
| CN112412287A (zh) * | 2020-11-03 | 2021-02-26 | 泉州市派腾新材料科技有限公司 | 一种基于激光熔覆的绝热复合防火门门芯及其制备方法 |
| CN114645160B (zh) * | 2022-03-09 | 2023-03-28 | 中国地质大学（武汉） | 一种球形合金粉末及其制备方法和激光熔覆方法 |
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