A case where results equivalent to those of previous thorium tungsten evaluations were obtained.
Thorium tungsten is a material that adds thorium oxide to tungsten, resulting in a low work function, good electron emission properties, and stable discharge characteristics. However, thorium oxide is a radioactive substance, and its manufacturing requires inspection and approval, with finished products containing it also subject to NORM guidelines. Taking into account the requests and issues of various lamp manufacturing companies both domestically and internationally, we collaborated with Japan Tungsten to develop materials that can withstand lamp usage. Development was primarily focused on neodymium oxide and hafnium oxide, achieving evaluation results in lamp lighting assessments—considering crystal growth, strength, toxicity, discharge characteristics, blackening, and lifespan—comparable to those of conventional thorium tungsten. *For more details, please refer to the external link page or feel free to contact us.*
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Yakeshi Electric Co., Ltd. is a specialized group in rare metals and tungsten. Our strengths lie in "speedy and flexible" service, and we are dedicated to manufacturing with a sincere commitment to customer satisfaction. We do not offer "standard products" or "catalog items"; instead, we have created hundreds of thousands of products primarily focused on precision processing of tungsten and high-melting-point metals, almost all of which are made-to-order and made in Japan. Please feel free to contact us with your requests.