Improvement in corrosion resistance of anchor steel by low temperature plasma nitriding

Abstract

Plasma nitriding was used to improve the corrosion performance of anchor steel. The microstructure, phase constitution, microhardness and corrosion resistance of the nitrided layer were systematically studied. The results show that the nitrided layer is continuous and dense, and consists of Fe₄N and Fe₃N in the outmost surface. The microhardness of the nitrided sample is improved because of the formation of nitrides in the outer side continuous layer and the inner parts. The nitrided layer on the surface of anchor steel can effectively improve the corrosion resistance of the anchor steel.

Keywords

plasma nitriding / anchor steel / corrosion resistance

References

[1] Niu S Q, Yang S S, Cui L Research on the Characteristics of Strainsoftening Model after Peak Based on Morh-Cloumb Theory Criterion[J]. Adv. Mater. Res., 2011, 261–263: 439-443.

[2] Yang S S, Niu S Q Thick Board Theory on the Bolting Support of the Ribs in Coal Mine Roadway[J]. Adv. Mater. Res., 2011, 255–260: 3 775-3 779.

[3] Zhang S, Li H Z, Deng Y H, . Study on Causes and Measures of High-strength Bolt Supporting Failure[J]. Min. Eng., 2009, 7(2): 17-19.

[4] Cui N, Xue Y T Discussion about the Corrosion of Anchor[J]. Technol. West China, 2009, 8(19): 48-49.

[5] Huang Y, Guo Z K, Xiang X F Corrosion of Anchor Bar and Its Resistance[J]. Geotech. Eng. Techniq., 2004, 18(5): 263-266.

[6] Lin N M, Xie F Q, Zou J J, . Application of Artificial Neural Network to Predict the Thickness of Chromizing Coatings on P110 Steel[J]. J. Wuhan Univer. Technol. -Mater. Sci. Ed., 2013, 28(1): 196-201.

[7] Lin N M, Xie F Q, Zou J J, . Slurry Erosion Behaviors of P110 Steel and Chromizing Coating in Liquid-solid Two-phase Flow[J]. Sci. China Tech. Sci., 2013, 56: 1 415-1 423.

[8] Lin N M, Wang H F, Sun X L, . Friction and Wear Characteristics of Ni-Base Alloy Coating on P110 Steel Fabricated by Transient Electric Energy Deposition [J]. Rare Met. Mater. Eng., 2012, 41(S2): 500-504.

[9] Lin N M, Xie F Q, Yang H J, . Assessments on Friction and Wear Behaviors of P110 Steel and Chromizing Coating Sliding against Two Counterparts under Dry and Wet Conditions[J]. Appl. Surf. Sci., 2012, 258: 4 960-4 970.

[10] Menthe E, Rie K T, Schultze J W, . Structure and Properties of Plasma-Nitrided Stainless Steel[J]. Surf. Coat. Technol., 1995, 74–75: 412-416.

[11] Saker A, Leroy C, Michel H, . Properties of Sputtered Stainless Steel-nitrogen Coatings and Structural Analogy with Low Temperature Plasma Nitrided Layers of Austenitic Steels[J]. Mater. Sci. Eng., 1991, 140: 702-708.

[12] Zhang Z L, Bell T Structure and Corrosion Resistance of Plasma Nitrided Stainless Steel[J]. Surf. Eng., 1985, 1(2): 131-136.

[13] Wang J, Xiong J, Peng Q, . Effect of DC Plasma Nitriding Parameters on Microstructure and Properties of 304L Stainless Steel[J]. Mater. Charact., 2009, 60(3): 197-203.

[14] Lin N M, Huang X B, Zou J J, . Effects of Plasma Nitriding and Multiple Arc Ion Plating TiN Coating on Bacterial Adhesion of Commercial Pure Titanium via in vitro Investigations[J]. Surf. Coat. Technol., 2012, 209: 212-215.

[15] Lin N M, Huang X B, Zhang X Y, . In vitro. Appl. Surf. Sci., 2012, 258: 7 047-7 051.

[16] He J G, Wen J B, Zhou X D Corrosion Behavior of Al-Zn-Sn-Ga Alloy in NaCl Solution[J]. J. Wuhan Univ. Technol. -Mater. Sci. Ed., 2012, 27(4): 644-647.

[17] Lin N M, Xie F Q, Tang B Corrosion Resistance of Chromizing Coating in Simulated Oilfield Stratum Water[J]. Rare Met. Mater. Eng., 2012, 41(S2): 658-662.

[18] Huang J, Zhang P Z, Wu H Y, . Improving Corrosion Resistance of Q235 Steel by Ni-Cr Alloyed Layer[J]. J. Wuhan Univ. Technol. -Mater. Sci. Ed., 2012, 27(1): 33-37.

[19] Lin N M, Xie F Q, Zhou J, . Study on Fabrication and Corrosion Resistance of Ni-based Alloy Coating on P110 Steel by Electro Spark Deposition[J]. J. Mater. Eng.Perform., 2013, 22: 1 365-1 370.

[20] Xiao L, Li S M, Zeng X M, . Corrosion Inestigation and Mechanical Behavior Test on Support of Bolts in Underground Drift[J]. Chin. J. Rock Mech. Eng., 2008, 27(S2): 3 791-3 797.