金刚石表面的热爆反应合成涂层

孙长红; 梁宝岩; 张旺玺

doi:10.13394/j.cnki.jgszz.2021.0098

金刚石表面的热爆反应合成涂层

doi: 10.13394/j.cnki.jgszz.2021.0098

1.
郑州职业技术学院材料工程系，郑州450010
2.
中原工学院材料与化工学院，郑州450007

基金项目: 国家自然科学基金(51864028)；河南省科技攻关项目（212102210465）。

详细信息

作者简介:
孙长红，男，1992年生，助教。主要研究方向：超硬复合材料。E-mail: baoyanl@126.com

中图分类号: TQ164
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- 被引次数: 0
出版历程
- 收稿日期: 2021-09-18
- 修回日期: 2022-01-04
- 录用日期: 2021-12-07
- 网络出版日期: 2022-03-17
- 刊出日期: 2022-03-17

Thermal explosion reaction synthetic coating on diamond surface

1.
Department of Materials Engineering, Zhengzhou Technical College, Zhengzhou 450010, China
2.
Materials and Chemical Engineering School, Zhongyuan University of Technology, Zhengzhou 450007, China

摘要

摘要: 以M(Mn或Cr)/Al/B/Diamond粉体为原料，通过热爆反应技术在金刚石表面生成多元复合涂层，并用X射线衍射仪、扫描电镜结合能谱仪研究2种原料体系及不同Al含量对陶瓷基体和涂层的物相组成和显微形貌的影响。结果表明：在N₂的保护和引爆下，Cr/Al/B/Diamond粉体的热爆反应在金刚石表面形成CrB-AlN基多元复合涂层及Cr₅Al₈和Cr₂AlB₂等副产物；在Ar保护下，Mn/Al/B/Diamond粉体的热爆反应在金刚石表面形成Mn₂AlB₂基复合涂层。2种涂层对金刚石的包裹良好。2种热爆反应由于放热量较小，反应产物难以烧结成块体。制备出的疏松多孔块体易于粉碎和分离，从而可将陶瓷基体与金刚石颗粒分离。
- 涂层 /
- 金刚石 /
- 热爆反应
Abstract: Using M(Mn or Cr)/Al/B/diamond powders as raw materials, the multicomponent composite coatings were formed on the surface of diamond by thermal explosion reaction technology. The effects of two raw material systems and different Al contents on the phase compositions and the microstructures of ceramic matrix and coatings were studied by X-ray diffractometer, scanning electron microscope and energy dispersive spectrometer. The results show that under the protection and detonation of N₂, the thermal explosion reaction of Cr/Al/B/diamond powder forms CrB-AlN based multicomponent composite coating and by-products such as Cr₅Al₈ and Cr₂AlB₂ on the surface of diamond. Under the protection of Ar gas, Mn₂AlB₂ based composite coating is formed on the surface of diamond by thermal explosion reaction of Mn/Al/B/diamond powder. The two coatings wrap diamond well. Due to the small heat release of the two thermal explosion reactions, the reaction products are difficult to sinter into blocks. The prepared loose porous blocks are easy to crush and separate.Therefore, the ceramic matrix can be separated from diamond particles.
- coating /
- diamond /
- thermal explosion reaction

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图 1 金刚石原料及Cr/Al/B/Diamond压坯热爆后分离的金刚石颗粒形貌

Figure 1. Morphology of diamond raw material particles and diamond particles separated after thermal explosion of Cr/Al/B/Diamond compacts

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图 2 Cr/Al/B/Diamond体系中的陶瓷基体及金刚石XRD图

Figure 2. XRD patterns of ceramic matrix and diamonds in Cr/Al/B/Diamond system

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图 3 Cr/Al/B/Diamond体系中的陶瓷基体SEM形貌

Figure 3. SEM morphologies of ceramic matrix in Cr/Al/B/Diamond system

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图 4 Cr/Al/B/Diamond体系中金刚石的SEM形貌

Figure 4. SEM morphologies of diamonds in Cr/Al/B/Diamond system

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图 5 Mn/Al/B/Diamond体系中的陶瓷基体和金刚石XRD图

Figure 5. XRD patterns of ceramic matrix and diamond in Mn/Al/B/Diamond system

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图 6 Mn/Al/B/Diamond体系中陶瓷基体粉体的典型SEM形貌

Figure 6. Typical SEM morphologies of ceramic matrix powder in Mn/Al/ B/Diamond system

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图 7 Mn/Al/B/Diamond体系中金刚石颗粒的形貌

Figure 7. Morphologies of diamond particle in Mn/Al/B/Diamond system

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图 8 金刚石颗粒表面研磨破损后的显微形貌

Figure 8. Micro morphology of diamond particle surface after grinding and damage

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图 9 x = 1时的混合粉末的差热分析结果

Figure 9. DSC results of mixed powder at x = 1

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图 10 Cr/Al/B/N₂ 和Mn/Al/B体系典型反应的吉布斯自由能随温度的变化

Figure 10. Variation of Gibbs free energy with temperatures for typical reactions of Cr/Al/B/N₂ and Mn/Al/B systems

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表 1 M(Cr或Mn)/Al/B体系中重要反应的标准摩尔焓变值

Table 1. Standard molar enthalpy changes of important reactions in M(Cr or Mn)/Al/B system

序号	反应	焓变值 ΔH / (kJ·mol⁻¹)	文献
1	Cr + B ＝ CrB	−75.3	[18]
2	Cr + 2B ＝ CrB₂	−94.1	[18]
3	2Cr + Al ＝ Cr₂Al	−12.2	[19]
4	8Cr + 5Al ＝ Cr₈Al₅	−14.3	[19]
5	9Cr + 17Al ＝ Cr₉Al₁₇	−15.7	[19]
6	Al + 2B ＝ AlB₂	−66.9	[18]
7	Mn + B ＝ MnB	−75.3	[18]
8	Mn + 2B ＝ MnB₂	−94.1	[18]
9	8Al + 5Mn ＝ Al₈Mn₅	−25.8	[20]
10	6Al + Mn ＝ Al₆Mn	−15.6	[20]
11	4Al + Mn ＝ Al₄Mn	−21.2	[20]

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参考文献(20)

[1]	陈石林, 彭振斌, 陈启武. 聚晶金刚石复合体的研究进展 [J]. 矿冶工程,2004,24(2):85-89. CHEN Shilin, PENG Zhenbin, CHEN Qiwu. Advances in research work on polycrystalline diamond compacts [J]. Mining and Metallurgical Engineering,2004,24(2):85-89.
[2]	HOU K H, HAN T W, SHEU H H, et al. Preparation and wear resistance of electrodeposited Ni–W/diamond composite coatings [J]. Applied Surface Science,2014,308(15):372-379.
[3]	LIANG X, JIA C, CHU K, et al. Thermal conductivity and microstructure of Al/diamond composites with Ti-coated diamond particles consolidated by spark plasma sintering [J]. Journal of Composite Materials,2012,46(9):1127-1136. doi: 10.1177/0021998311413689
[4]	LI R, FENG Y, WANG X, et al. The simultaneous deposition and growth mechanism of diamond-like carbon films on both surfaces of stainless steel substrate by electrodeposition [J]. Materials Review,2016,30(2):56-60.
[5]	LIN B, WANG X, ZHANG Y, et al. Interface characterization of a Cu-Ti-coated diamond system [J]. Surface and Coatings Technology,2015,278:163-170. doi: 10.1016/j.surfcoat.2015.08.006
[6]	MIYAKE S, SHINDO T, MIYAKE M. Regression analysis of the effect of bias voltage on nano- and macrotribological properties of diamond-like carbon films deposited by a filtered cathodic vacuum arc ion-plating method [J]. Journal of Nanomaterials, 2014,2014(1):1-13.
[7]	WALID M D, HEE S P, SOON H H. Fabrication of TiN/cBN and TiC/diamond coated particles by titanium deposition process [J]. Transactions of Nonferrous Metals Society of China,2014,24(11):3562-3570. doi: 10.1016/S1003-6326(14)63502-0
[8]	ROMMEL D, SCHERM F, KUTTNER C, et al. Laser cladding of diamond tools: Interfacial reactions of diamond and molten metal [J]. Surface and Coatings Technology,2016(291):62-69.
[9]	OKADA T, FUKUOKA K, ARATA Y, et al. Tungsten carbide coating on diamond particles in molten mixture of Na₂CO₃ and NaCl [J]. Diamond & Related Materials,2015,52:11-17.
[10]	MERZHANOVA G. Combustion processes that synthesize materials [J]. Journal of Material Process Technology,1996,56(1/2/3/4):222-241. doi: 10.1016/0924-0136(95)01837-9
[11]	THIERS L, MUKASYAN A S, VARMA A. Thermal explosion in Ni-Al system: Influence of reaction medium microstructure [J]. Combustion and Flame,2002,131(1/2):198-209. doi: 10.1016/S0010-2180(02)00402-9
[12]	JIAO X Y, CAI X P, NIU G, et al. Rapid reactive synthesis of TiAl₃ intermetallics by thermal explosion and its oxidation resistance at high temperature [J]. Progress in Natural Science:Materials International,2019,29(4):447-452. doi: 10.1016/j.pnsc.2019.05.002
[13]	LIU Y, SUN Z, CAI X, et al. Fabrication of porous FeAl-based intermetallics via thermal explosion [J]. Transactions of Nonferrous Metals Society of China,2018,28(6):1141-1148. doi: 10.1016/S1003-6326(18)64737-5
[14]	ZHANG F, YUAN H, WANG C,et al. Microstructure of Ni-Al-Diamond composite fabricated by self propagating high temperature synthesis [J]. Key Engineering Materials,2005(291/292):531-534.
[15]	XU X, GUO P, ZUO X, et al. Understanding the effect of Al/Ti ratio on the tribocorrosion performance of Al/Ti co-doped diamond-like carbon films for marine applications [J]. Surface and Coatings Technology,2020,40:126347. doi: 10.1016/j.surfcoat.2020.126347
[16]	LIANG B, WANG Z, WANG L, et al. Self-propagation high-temperature sintering of the Ti-Al-C-diamond/BN system [J]. International Journal of Materials Research,2014,105(4):417-420. doi: 10.3139/146.111039
[17]	YEMBADI R, PANIGRAHI B B. Thermodynamic assessments and mechanically activated synthesis of ultrafine Cr₂AlC MAX phase powders [J]. Advanced Powder Technology,2017,28(3):732-739. doi: 10.1016/j.apt.2016.11.020
[18]	叶大伦, 胡建华. 实用无机物热力学数据手册 [M]. 北京: 冶金工业出版社, 2002. YE Dalun, HU Jianhua. Practical inorganic thermodynamic data book [M]. Beijing: Metallurgical Industry Press, 2002.
[19]	CUI S, JUNG I, KIM J, et al. A coupled experimental and thermodynamic study of the Al-Cr and Al-Cr-Mg systems [J]. Journal of Alloys and Compounds,2017,698:1038-1057. doi: 10.1016/j.jallcom.2016.12.298
[20]	LIU X, OHNUMA I, KAINUMA R, et al. Thermodynamic assessment of the aluminum-manganese (Al-Mn) binary phase diagram [J]. Journal of Phase Equilibria,1999,20(1):45-56. doi: 10.1361/105497199770335938