Alloy - A metal compound made by combining two or more metals together, which distorts the layers to give greater strength., Borosilicate glass - Glass made from sand and boron trioxide. It melts at higher temperatures than soda-lime glass., Composite - Most composites are made of two materials, a matrix or binder surrounding and binding together fibres or fragments of the other material, which is called the reinforcement., Corrosion - Corrosion is the destruction of materials by chemical reactions with substances in the environment, e.g. rusting., Electroplating - Electroplating is the process of coating a metal with a thin layer of another metal by electrolysis to improve the metal's corrosion resistance., Galvanise - A process used to protect against corrosion by coating the metal with a protective layer of zinc., NPK fertilisers - Fertilisers which contain compounds of nitrogen, phosphorus and potassium. The fertilisers improve agricultural productivity., Sacrificial protection - The protection of iron or steel against corrosion by using a more reactive metal. Zinc is often used as a sacrificial metal., Soda-lime glass - Glass made by heating a mixture of sand, sodium carbonate and limestone., The Haber process - The process used to manufacture ammonia from hydrogen and nitrogen gas.,

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