Method of controlling the corrosion rate of alloy particles, alloy particle with controlled corrosion rate, and articles comprising the particle

A method of forming a composite, the method comprising:

• depositing
• a first aluminum-containing layer, on
• a magnesium alloy core comprising magnesium alloyed with one or more of the following:
• Al;
• Cd;
• Ca;
• Co;
• Cu;
• Fe;
• Mn;
• Ni;
• Si;
• Ag;
• Sr;
• Th;
• Zn;
• Zr;
• or W,
• to form a shielding layer, the shielding layer further comprising an interlayer formed at the interface between the magnesium alloy core and the first aluminum-containing layer;
• depositing a metallic layer on the shielding layer;
• the metallic layer comprising Ni, Fe, Cu, Co, W, alloys thereof, or a combination comprising at least one of the foregoing;
• and
• optionally, depositing an adhesion metal layer on the metallic layer to form a composite particle;
• the adhesion metal layer comprising aluminum;
• wherein the core and shielding layer, shielding layer and metallic layer, and metallic layer and optional adhesion metal layer, are each in mutual partial contact such that components of the core, the shielding layer, and the metallic layer are present at an exposed surface of the composite particle.