Effects of substrate local strain on microstructure of electrodeposited aluminum film

Abstract

The aluminum coating layer was formed on a copper substrate with local strain region by using the electrodeposited method. It was found that the particle shape of the coating deposited on the copper substrate is very sensitive to the strain extent of substrate. The large needle-like aluminum particles were observed on the substrate region with large local strain, indicating that substrate local strain may affect the shape of the deposited particles and promote the nucleation and growth of the deposited particles.

Keywords

electrodeposition / strain energy / particle shape

References

[1] Pina J, Dias A, Francois M, Lebrun J L. Residual Stresses and Crystallographic Texture in Hard-chromium Electroplated Coatings[J]. Surface and Coating Technology, 1997, 96(2): 148-162.

[2] Gálová M. Electrodeposition of Aluminium from Organic Aprotic Solvents [J]. Surface Technology, 1980, 11(5): 357-369.

[3] Kozlov V M, Peraldo Bicelli L. Influence of the Nature of Metals on the Formation of the Deposit's Polycrystalline Structure During Electrocrystallization[J]. Journal of Crystal Growth, 1999, 203(1–2): 255-260.

[4] Smidt F A. Use of Ion-beam Assisted Deposition to Modify the Microstructure and Properties of Thin-films[J]. International Materials Review, 1990, 35(2): 61-128.

[5] Park K S, Park J K. Effect of Thin Film Stress on the Eelastic Strain Energy of Cr Thin Film on Substrate[J]. Acta Materialia, 1999, 47(7): 2 177-2 184.

[6] Matejicek J, Sampath S, Suresh S, . Measurement of Residual Stress in Plasma-sprayed Metallic, Ceramic and Composite Coatings[J]. Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing, 1999, 47(7): 215-224.

[7] Kuroda S, Tashiro Y, Yumoto H, Tobe S. Peening Action and Rresidual Stresses in High-velocity Oxygen Fuel Thermal Spraying of 316L Stainless Steel [J]. Journal of Thermal Spray Technology, 2001, 10(2): 367-374.

[8] Kesler O, Finot M, Suresh S, Sampath S. Determination of Processing-induced Stresses and Properties of Layered and Graded Coatings: Experimental Method and Results for Plasma-sprayed Ni−Al₂O₃ [J]. Acta Materialia, 1997, 45(8): 3 123-3 134.

[9] Greving D J, Rybickief E F, RShadley J. Through-thickness Residual-stress Evaluations for Several Industrial Thermal Spray Coating using a Modified Layer-removal Method [J]. Journal of Thermal Spray Technology, 1994, 3(4): 379-388.

[10] Esinger W. Ion Source Ion Beam Assisted Thin-films Deposition[J]. Review Science Instrument, 1992, 63(11): 5 217-5 217.

[11] Nabarro F R N. The Influence of Elastic Strain on the Shape of Particles Segregating in an Alloy [J]. Proceedings of the Physical Society, 1940, 52: 90-93.