Mg0.27Al2.58O3.73N0.27透明陶瓷机械性能评价

doi:10.15541/jim20170556

摘要/Abstract

摘要：

MgAlON透明陶瓷具有优良的光学与机械性能, 在军用和民用领域均具有重要的应用潜力。本研究表征并评价了Mg_0.27Al_2.58O_3.73N_0.27透明陶瓷的机械性能, 实验测定了Mg_0.27Al_2.58O_3.73N_0.27透明陶瓷的维氏硬度、断裂韧性以及室温和高温断裂强度, 并使用Weibull函数对室温断裂强度测试结果进行统计。结果表明: 该透明陶瓷特征断裂强度为255 MPa、断裂韧性为2.56 MPa/m^1/2、杨氏模量为288 GPa、硬度为15.1 GPa。样品的Weibull模数为4.5, 1200℃下样品断裂强度达125 MPa。同时还测定了不同载荷下Mg_0.27Al_2.58O_3.73N_0.27透明陶瓷的硬度与不同载荷加载速率下的断裂强度。研究表明MgAlON光学透明陶瓷机械性能介于AlON和MgAl₂O₄之间。

关键词: MgAlON, 透明陶瓷, 机械性能, Weibull统计

Abstract:

Owing to excellent optical and mechanical properties, MgAlON transparent ceramic has been considered as a potential candidate for important military and civilian applications in recent years. In this study, several characterizations were conducted to evaluate the hardness, fracture toughness, and flexural strength of Mg_0.27Al_2.58O_3.73N_0.27 transparent ceramic. Flexural strength at room temperature of Mg_0.27Al_2.58O_3.73N_0.27 were further analyzed using Weibull statistic. The results show that the Vicker’s hardness, flexural strength, fracture toughness, and Young’s modulus of the transparent ceramic were equal to 15.1 GPa, 255 MPa, 2.56 MPa/m^1/2, and 288 GPa, respectively, while the flexural strength of samples at 1200℃ was determined to be 125 MPa. The Weibull modulus of specimens was 4.5. Flexural strength and Vicker’s hardness of Mg_0.27Al_2.58O_3.73N_0.27 transparent ceramic were also investigated under different loading condition. The work reveals that mechanical properties of MgAlON transparent ceramic are higher than those of MgAl₂O₄ transparent ceramic, but a slightly lower than those of AlON transparent ceramic.

Key words: MgAlON, transparent ceramic, mechanical properties, Weibull statistic

中图分类号:

TQ174

张舟, 王皓, 涂兵田, 徐鹏宇, 王为民, 傅正义. Mg_0.27Al_2.58O_3.73N_0.27透明陶瓷机械性能评价[J]. 无机材料学报, 2018, 33(9): 1006-1010.

ZHANG Zhou, WANG Hao, TU Bing-Tian, XU Peng-Yu, WANG Wei-Min, FU Zheng-Yi. Characterization and Evaluation on Mechanical Property of Mg_0.27Al_2.58O_3.73N_0.27 Transparent Ceramic[J]. Journal of Inorganic Materials, 2018, 33(9): 1006-1010.

图/表 9

表1 机械性能测试详情

Table 1 Details of mechanical properties tests in this work

Property	Testing standards	Shape of specimens /testing condition	Number of specimens	Testing instruments
Flexural strength	ASTM C1499	Disks, ϕ 32.5 mm, h=1.4 mm	25	Universal Testing Machine (Model 810; MTS Systems Inc., Minneapolis, MN)
Fracture toughness	GB/T 23806-2009	Bars, 25 mm×5 mm×2.5 mm	10
Young's modulus	GB/T 10700-2006	Bars, 25 mm×5 mm×2.5 mm	10	Ultrasonic Equipment (EXPLORE-9000; Matec Instruments, Hookinton,MA)
Vicker's hardness	GB/T 16534-2009	0.3-3 kg, 10 s	10	Hardness Tester (Model 430 SVD; Wolpert, Shanghai, China)
High temperature flexural strength	GB/T 14390-2008	Bars, 50 mm×5 mm×3.5 mm	6	Made by China Building Materlals Academy

图1 Mg0.27Al2.58O3.73N0.27透明陶瓷样品光学透过率图谱

Fig. 1 Optical transmission spectra of Mg0.27Al2.58O3.73N0.27 transparent ceramic

图2 Mg0.27Al2.58O3.73N0.27刻蚀表面的SEM照片

Fig. 2 SEM image of etched surface of Mg0.27Al2.58O3.73N0.27

图3 Mg0.27Al2.58O3.73N0.27透明陶瓷抗弯强度Weibull统计图

Fig. 3 Fracture strength Weibull plots for Mg0.27Al2.58O3.73N0.27

图4 样品的断面SEM照片

Fig. 4 Fractured surface SEM image of specimen

图5 不同载荷速率下Mg0.27Al2.58O3.73N0.27透明陶瓷抗弯强度变化曲线

Fig. 5 Fracture strength as a function of loading rate for Mg0.27Al2.58O3.73N0.27 transparent ceramic

图6 不同载荷下Mg0.27Al2.58O3.73N0.27、MgAl2O4和AlON透明陶瓷的维氏硬度

Fig. 6 Vicker’s hardness of Mg0.27Al2.58O3.73N0.27 ,MgAl2O4 and AlON transparent ceramic as a function of the indentation load

图7 高温环境下Mg0.27Al2.58O3.73N0.27和AlON透明陶瓷的断裂强度

Fig. 7 Fracture strength of Mg0.27Al2.58O3.73N0.27 and AlON transparent ceramic at different temperatures

表2 Mg0.27Al2.58O3.73N0.27的机械性能与MgAl2O4和AlON对比

Table 2 Mechanical properties of Mg0.27Al2.58O3.73N0.27 compared with MgAl2O4 and AlON

	Vickers hardness (9.8 N)/GPa	Young's modulus/GPa	Flexural strength/MPa	Fracture toughness/(MPa·m^-1/2)
Mg_0.27Al_2.58O_3.73N_0.27	15.1±0.5	288±7	255±10	2.56±0.2
MgAl₂O₄^[15]	13.3	277	190	1.8±0.2
AlON^[15]	15.5	315	300	2.9

参考文献 25

[1]	GOLDSTEIN A, KRELL A.Transparent ceramics at 50: progress made and further prospects.Journal of the American Ceramic Society, 2016, 99(10): 3173-3197.
[2]	DU MERAC M R, KLEEBE H J, MÜLLER M M,et al. Fifty years of research and development coming to fruition; unraveling the complex interactions during processing of transparent magnesium aluminate (MgAl2O4) spinel. Journal of the American Ceramic Society, 2013, 96(11): 3341-3365.
[3]	KRELL A, HUTZLER T, KLIMKE J,et al. Fine-grained transparent spinel windows by the processing of different nanopowders. Journal of the American Ceramic Society, 2010, 93(9): 2656-2666.
[4]	LIU X, WANG H, TU B,et al. Highly transparent Mg0.27Al2.58O3.73N0.27 ceramic prepared by pressureless sintering. Journal of the American Ceramic Society, 2014, 97(1): 63-66.
[5]	OKARIEV O, SCHNETTER L, BECK T,et al. Grain size effect on the mechanical properties of transparent spinel ceramics. Journal of the European Ceramic Society, 2013, 33(4): 749-757.
[6]	CHANTIKUL P, LAWN B R, MARSHALL D B.Micromechanics of flaw growth in static fatigue: influence of residual contact stresses.Journal of the American Ceramic Society, 1981, 64(6): 322-325.
[7]	KRELL A, BALES A.Grain size-dependent hardness of transparent magnesium aluminate spinel.International Journal of Applied Ceramic Technology, 2011, 8(5): 1108-1114.
[8]	KRELL A, BLANK P.Grain size dependence of hardness in dense submicrometer alumina.Journal of the American Ceramic Society, 2010, 78(4): 1118-1120.
[9]	WAETZIG K, KRELL A.The effect of composition on the optical properties and hardness of transparent Al-rich MgO· nAl2O3 spinel ceramics. Journal of the American Ceramic Society, 2016, 99(3): 946-953.
[10]	ASTM C1499-05, Standard Test Method For Monotonic Equibiaxial Flexural Strength of Advanced Ceramics At Ambient Temperature.
[11]	KLEIN C A, MILLER R P.How to do a Weibull statistical analysis of flexural strength data: application to AlON, diamond, zinc selenide, and zinc sulfide. Proc SPIE, 2001, 4375: 241-257.
[12]	KLEIN C A. Flexural strength of infrared-transmitting window materials: bimodal Weibull statistical analysis. Optical Engineering, 2011, 50(2): 023402-1-10.
[13]	KLEIN C A, MILLER R P, GENTILMEN R L.Characteristic strength and Weibull modulus of selected infrared-transmitting materials.Optical Engineering, 2002, 41(12): 3151-3160.
[14]	MROZATJ, HARTNETTTM, WAHL J M.Recent advances in spinel optical ceramic. .2011-03-15.
[15]	HARRIS D C.Materials for Infrared Windows and Domes: Properties and Performance. Washington: SPIE, 1999: 84-121.
[16]	KRELL A, HUTZLER T, KLIMKE J.Transmission physics and consequences for materials selection, manufacturing, and applications.Journal of the European Ceramic Society, 2009, 29(2): 207-221.
[17]	JONATHAN A S.Transparent armor ceramics as spacecraft windows.Journal of the American Ceramic Society, 2013, 96(1): 281-289.
[18]	HARTNEET T M, MAGUIRE E A, GENTILMEN R L, et al. Aluminum Oxynitride Spinel (AlON): a New Optical and Multimode Window Material. New England Section Topical Meeting on Nonoxide Ceramics, USA, 1981: 67-76.
[19]	U H H K, JAHANNIR S. Scratching and grinding of a machinable glass-ceramic with weak interfaces and rising T-curve.Journal of the American Ceramic Society, 1995, 78(2): 497-500.
[20]	U H H K, JAHANNIR S, LEWIS K. Effect of grinding on strength of tetragonal zirconia and zirconia-toughened alumina.Machining Science & Technology, 1997, 1(1): 49-66.
[21]	EE S K, TANDON R, READY M J,et al. Scratch damage in zirconia ceramics. Journal of the American Ceramic Society, 2010, 83(6): 1428-1432.
[22]	LANGE F F.Powder processing science and technology for increased reliability.Journal of the American Ceramic Society, 1989, 72(1): 3-15.
[23]	ANSTIS G R, CHANTIKUL P, LAWN B R,et al. A critical evaluation of indentation techniques for measuring fracture toughness: I, direct crack measurements. Journal of the American Ceramic Society, 1981, 64(9): 533-538.
[24]	QUINN J B, QUINN G D.Indentation brittleness of ceramics: a fresh approach.Journal of Materials Science, 1997, 32(16): 4331-4346.
[25]	SU X, ZHOU N, ZHANG S.Oxidation behavior of aluminum oxynitride spinel (AlON) and its interaction with MgO and MgAl2O4 at elevated temperatures. China’s Refractories, 2002, 36(3): 136-138.