We are planning experiments that will involve hydrogen-boron plasma reacting with beryllium electrodes. Since very high current densities are involved, we are interested to see if any BeB compounds that are formed will have good electrical and thermal conductivity once the current heats them up.
“Borides are chemical compounds formed when boron bonds with a less electronegative element. Borides are all hard, high-melting-point materials with metal-like conductivity. Borides can be classified loosely as boron-rich or metal-rich. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more the compound is boron-rich, if it is less, then it is metal-rich”. https://www.americanelements.com/Borides.html
Dear Eric,
here are some values for electrical resistivity.
As for BeB4: 1.1 * 10^7 Ohm*cm @ T = 300 K
As for BeB6: 1.1 * 10^7 Ohm*cm @ T = 300 K
Sources:
https://books.google.it/books?id=fAF0NRhq5MMC&pg=PA14&dq=electrical+conductivity+BeB&hl=it&sa=X&ved=0ahUKEwjGkZSwksnRAhVHAcAKHW2tBKIQ6AEINjAA#v=onepage&q=electrical%20conductivity%20BeB&f=false
https://books.google.it/books?id=oL4RAQAAMAAJ&q=electrical+conductivity+BeB&dq=electrical+conductivity+BeB&hl=it&sa=X&ved=0ahUKEwjGkZSwksnRAhVHAcAKHW2tBKIQ6AEIaDAH
For other BeB compounds, you could like to have a glance at the monographic papers:
Samsonov G. V., Serebryakova T. I., Neronov V. A., "Boridy", Moskva Atomizdat 1975
Serebryakova, T. I., V. A. Neronov, and P. D. Peshev. "Vysokotemperaturnye boridy." High-Temperature Borides), Chelyabinsk: Metallurgiya (1991).
With warm regards
Andrea Di Vita
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