Wat is die verskil tussen geoksideerde silwer en sterling silwer?
Put, geoksideerde silwer is 'n verkeerde benaming. Dit klink asof jy silwer doelbewus geoksideer het om geoksideerde silwer te maak. Die waarheid is dat suiwer silwer of 99.9 persent suiwer silwer is 'n baie reaktiewe metaal. It reacts with atmospheric oxygen to form silver oxide which forms a black layer on pure silver. This gives the proof of its purity and the black color leads people to call it oxidized silver. Pure silver due to its reactivity is not suitable for cutlery or jewelry because it gets tarnished easily by exposure to air.
Sterling silwer is 'n legering van 92.5% silver and rest copper. This alloy does not get oxidized easily that is why it is used for jewelry and cutlery.
A piece of blackened or oxidized silver is true sterling silver, but it's surface has been intentionally darkened through by introducing it to a chemical process. This patina, a surface color that occurs when the silver is introduced to sulfides, is a sped up version of the natural tarnishing process.
You can oxidize sterling. We used a sulfur product to get a nice black. Sterling is 92.5 persent silwer en 7.5 percent copper usually. If you heat sterling too much, you can get fire scale.