A new copper based hermetic sealing material: A comparison with AgCu28GeCo0.3
For vacuum brazing applications Hermetic Sealing Materials (HSM) with low partial pressure are widely used to join copper or stainless steel parts. For joining copper AgCu28 is a widespread material, which is well characterized and investigated. For stainless steel, AgCu28Ge2Co0.3 is commonly used if the same brazing temperature as AgCu28 is required. Umicore Technical Materials has developed a new copper-based HSM. The tensile strength of the stainless steel joints on stainless steel is comparable to AgCu28Ge2Co0.3 and the wettability is significantly improved. In this article, the physical properties of the alloy and its brazed joints will be presented in comparison to AgCu28GeCo0.3. However, today the silver content of HSMs is more in focus than in the past decades, because it has the biggest impact on the material prices. To accommodate this trend the total silver content of the new HSM is reduced by almost 44 %.
Brazing: For the engineering technologist
Preface. Brazing fundamentals. Parameters and elements of brazing. Brazing heating methods. Braze filler metal and base material families. Fluxes, atmospheres - types and forms. Joint design, tooling/fixturing, surface preparation, inspection and safety. Applications and future of the process. Appendix. Index.
Cultivated Power: Flowers, Culture, and Politics in the Reign of Louis XIV
Ch. 1. Disorderly flowers Floral seduction: death, sex, and flowers Trading on the power of flowers Ch. 2. Refashioning the culture of flowers in early modern France Curiosity and flowers The sweet society of the curious florists Ch. 3. Cultivating the flower The florists' flowers Unlocking the door to the temple of flora Ch. 4. Cultivating the man The theater of the goddess of flowers Nature into art "Jardin d'Hyver," or flowers in print Ch. 5. Cultivating the king Royal precedents Flowers in the garden of Louis XIV Floral mercantilism Flowers and the "Histoire du Roi" Appendices A. Extract of the inventory by ... Sieur Cottereau of flowering plants and bulbs that he offers to furnish for the gardens of the royal households B. Plants included in Jean Donneau de Vise's Histoire de Louis le Grand