ZnO and ZnAl2O4 coated aluminium borate whisker (ABOw) reinforced pure aluminium composites were fabricated by squeeze casting. The effects of the coatings on the bending properties of the composites were investigated. On the analysis of fractographs, the fracture mechanisms of the composites under bending were also investigated. The results show that both ZnO and ZnAl2O4 coatings of ABOw can significantly increase the bending properties of ABOw reinforced aluminium composite. In ABOw/Al, ABOw/ZnO/Al and ABOw/ZnAl2O4/Al composites, the interface debonding, near interface fracture and near interface fracture and ABOw fracture dominate the fracture of each composite during bending respectively.
LiuG, RenWC, SunYL, HuJ: ‘Damping behavior of Bi2O3-coated Al18B4O33 whisker-reinforced pure Al composite’,Mater. Sci. Eng. A, 2010, A527, 5136–5142.
2.
ZhuSJ, IizukaT: ‘Fatigue behavior of Al18B4O33 whisker-framework reinforced Al matrix composites at high temperatures’,Compos. Sci. Technol., 2003, 63, 265–271.
3.
DikiciB, TekmenC, GavgaliM, CocenU: ‘The effect of electroless Ni coating of SiC particles on the corrosion behavior of A356 based squeeze cast composite’,J. Mech. Eng., 2011, 57, 11–20.
4.
ThamLM, GuptaM, ChengL: ‘Effect of limited matrix-reinforcement interfacial reaction on enhancing the mechanical properties of aluminum–silicon carbide composites’,Acta Mater., 2001, 49, 3243–3253.
5.
TuJP, YangYZ: ‘Tribological behaviour of Al18B4O33-whisker-reinforced hypoeutectic Al–Si–Mg–matrix composites under dry sliding conditions’,Compos. Sci. Technol., 2000, 60, 1801–1809.
6.
TekmenTC, CocenU: ‘Squeeze casting of Ni coated SiC particle reinforced Al based composite’,J. Compos. Mater., 2008, 42, 1271–1279.
7.
GaoHQ, WangLD, FeiWD: ‘Electroless plating copper coating of Al18B4O33 whisker for interface improvement of whisker reinforced aluminum matrix composite’,Mater. Sci. Technol., 2007, 23, 1497–1504.
8.
FeiWD, LiYB: ‘Effect of NiO coating of whisker on tensile strength of aluminum borate whisker-reinforced aluminum composite’,Mater. Sci. Eng. A, 2004, A379, 27–32.
9.
BrinkerCJ, SchererGW: ‘Sol–gel science: the physics and chemistry of sol–gel processing’; 1990, New York, Academic Press.
10.
DingDY, WangJN, NingCQ, DaiKR: ‘On the thermal stability of coating in an Al18B4O33w/α-Al2O3/6061Al composite’,Mater. Sci. Eng. A, 2003, A358, 159–163.
11.
YueHY, FeiWD, LiZJ, WangLD: ‘Sol–gel process of ZnO and ZnAl2O4 coated aluminum borate whiskers’,J. Sol–Gel Sci. Technol., 2007, 44, 259–262.
12.
PetevesSD, PaulastoM, CecconeG, StamosV: ‘The reactive route to ceramic joining: fabrication, interfacial chemistry and joint properties’,Acta Mater., 1998, 46, 2407–2414.
