Pinchbeck (alloy) it came to mean a cheap and tawdry imitation of gold. Pinchbeck is typically composed of copper and zinc in ratios of 89% copper to 11% zinc; or 93% copper to 7% zinc. Pinchbeck (alloy) Pinchbeck is a form of brass, an alloy of copper and zinc, mixed in proportions so that it closely resembles gold in appearance. It was invented in the 18th century by Christopher Pinchbeck, a London clockmaker. Since gold was only sold in 18-carat quality at that time, the development of pinchbeck allowed ordinary people to buy gold 'effect' jewellery on a budget. The inventor allegedly
Novel polymeric alloy found in slopes, channels and retaining wall applications. Novel polymeric alloy Novel polymeric alloy, also known as Neoloy, is a polymeric alloy composed of polyolefin and thermoplastic engineering polymer. It was developed specifically for use in high-strength geosynthetics. The first commercial application was in the manufacturer of polymeric strips used to form cellular confinement systems (geocells). Novel polymeric alloy was developed to replace high-density polyethylene (HDPE) in geosynthetics. Although HDPE is widely used due to its low cost, ease of manufacturing and flexibility, its relatively high creep, low tensile strength and sensitivity to elevated temperatures limit its use, for example,