[1] Guo Qianjin, Yu Haibin, Xin Yong et al.. Experimental study on high alloy steel sample by laser-induced breakdown spectroscopy［J］. Spectroscopy and Spectral Analysis, 2010, 30(3): 783～787

[2] Yao Shunchun, Lu Jidong, Pan Shenghua et al.. Analysis of unburned carbon in coal fly ash by using laser-induced breakdown spectroscopy in deep UV［J］. Chinese J. Lasers, 2010, 37(4): 1114～1117

[3] Xie Chengli, Lu Jidong, Li Jie et al.. Matrix effect on laser-induced breakdown spectroscopy of fine coal［J］. Journal of Engineering Thermophysics, 2008, 29(2): 331～334

[4] I. Rausch Enbach, V. Lazic, S. G. Pavlov et al.. Laser induced breakdown spectroscopy on soils and rocks: influence of the sample temperature, moisture and roughness［J］. Spectrochimica Acta, Part B, 2008, 63(10): 1205～1215

[5] R. Wisbrun, I. Schechter, R. Niessner et al.. Detector for trace elemental analysis of solid environmental samples by laser plasma spectroscopy［J］. Anal. Chem., 1994, 66(18): 2964～2975

[6] S. Laville, M. Sabsabi, F. R. Doucet. Multi-elemental analysis of solidified mineral melt samples by laser induced breakdown spectroscopy coupled with a linear multivariate calibration［J］. Spectrochimica Acta, Part B, 2007, 62(12): 1557～1566

[7] Jens Vrenegor, Reinhard Noll, Volker Sturm et al.. Investigation of matrix effects in laser-induced breakdown spectroscopy plasmas of high-alloy steel for matrix and minor elements［J］. Spectrochimica Acta, Part B, 2005, 60(7-8): 1083～1091

[8] S. Nasrazadani, H. Namduri. Study of phase transformation in iron oxides using laser induced breakdown spectroscopy［J］. Spectrochimica Acta, Part B, 2006, 61(5): 565～571

[9] Z. A. Abdel-Salam, M. Abdelhamid, S. M. Khalil et al.. LIBS New application: determination of metallic alloys surface hardness［C］. 7th International Conference on Laser Applications-ICLA, 2009, 1172: 49～52

[10] Z. A. Abdel-Salam, Z. Nanjing, D. Anglos et al.. Effect of experimental conditions on surface hardness measurements of calcified tissues via LIBS［J］. Appl. Phys. B-Lasers and Optics, 2009, 94(1): 141～147

[11] Z. A. Abdel-Salam, A. H. Galmed, E. Tognoni et al.. Estimation of calcified tissues hardness via calcium and magnesium ionic to atomic line intensity ratio in laser induced breakdown spectra［J］. Spectrochimica Acta, Part B, 2007, 62(12): 1343～1347

[12] Timur A. Labutin, Andrey M. Popov, Dmitriy N. Sychev et al.. Correlation between mechanical properties of aluminum alloys and characteristics of laser-induced plasma［C］. SPIE, 2007, 7022: 70221C

[13] Timur A. Labutin, Andrey M. Popov, Vasily N. Lednev et al.. Correlation between properties of a solid sample and laser-induced plasma parameters［J］. Spectrochimica Acta, Part B, 2009, 64(10): 938～949

[14] Pan Shenghua, Lu Jidong, Yao Shunchun et al.. Impact of metallurgical structure on laser induced steel plasma［J］. Chinese J. Lasers, 2010, 37(8): 2126～2130

[15] Shunchun Yao, Jidong Lu, Kai Chen et al.. Study of the laser-induced plasma spectra of steel with different microstructure［J］. Appl. Surf. Sci., 2011, 257(7): 3103～3110

[16] Li Yu. Typical Metal and Institutions Heat-Treatment New Technology and Metal Hardness Testing Technology and Practical Practice Handbook［M］. Beijing: The Northern Industrial Press, 2006

[17] Han Dewei. Metal Hardness Testing Technical Manuals［M］. Changsha: Central South University Press, 2003. 7～37

[18] Physical Measurement Laboratory. NIST atomic spectra database［OL］.［2011-3-25］. http://www.nist.gov/physlab/index.cfm

[19] Umit Aydin, Peter Roth, Christoph Dominic Gehlen et al.. Spectral line selection for time-resolved investigations of laser-induced plasmas by an iterative Boltzmann plot method［J］. Spectrochimica Acta, Part B, 2008, 63(10): 1060～1065

[20] K. Tsuyuki, S. Miura, N. Idris et al.. Measurement of concrete strength using the emission intensity ratio between Ca(II) 396.8 nm and Ca(I) 422.6 nm in a NdYAG laser-induced plasma［J］. Appl. Spectroscopy, 2006, 60(1): 61～64

[21] Tang Xiaoshuan, Li Chunyan, Zhu Guanglai et al.. Experimental investigation on the electron density and electron temperature of laser-induced Al plasmas［J］. Chinese J. Lasers, 2004, 31(6): 687～692

[22] S. Mohamad, C. Paolo. Quantitative analysis of aluminum alloys by laser-induced breakdown spectroscopy and plasma characterization［J］. Appl. Spectroscopy, 1995, 49(4): 499～507

[23] Fan Jianmei, Yao Guanxin, Zhang Xianyi et al.. Experimental investigation on emission spectra of femtosecond laser-induced Ni plasmas［J］. Chinese J. Lasers, 2010, 37(8): 1956～1960