High-Fidelity Loudspeakers with Boronized Titanium Diaphragms

Yamamoto T, Tsukagoshi T, Tohma T, Kimura M, Tanaka F. High-Fidelity Loudspeakers with Boronized Titanium Diaphragms. J Audio Eng Soc. 1980;28(12):868-873. Available from: https://aes.org/publications/elibrary-page/?id=3942

@article{Yamamoto1980_3942,
  author = {Yamamoto, Takeo and Tsukagoshi, Tsunehiro and Tohma, Teruo and Kimura, Masami and Tanaka, Fujio},
  title = {{High-Fidelity Loudspeakers with Boronized Titanium Diaphragms}},
  journal = {Journal of the Audio Engineering Society},
  volume = {28},
  number = {12},
  pages = {868--873},
  year = {1980},
  month = dec,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=3942}
}

TY  - JOUR
TI  - High-Fidelity Loudspeakers with Boronized Titanium Diaphragms
AU  - Yamamoto, Takeo
AU  - Tsukagoshi, Tsunehiro
AU  - Tohma, Teruo
AU  - Kimura, Masami
AU  - Tanaka, Fujio
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 28
IS  - 12
SP  - 868
EP  - 873
PY  - 1980
DA  - 1980/12/06
UR  - https://aes.org/publications/elibrary-page/?id=3942
PB  - Audio Engineering Society
LA  - en
AB  - A process of boronizing titanium is developed to produce high-quality diaphragms for loudspeakers. A titanium diaphragm is buried in a mixed power of boron, carbon, and sodium carbonate, and is heated. Titanium borides in the form of TiB and TiB(2) are obtained at the diaphragm surface. 10 min of treatment at a 25-µm thick titanium diaphragm at 1200° C gives a Young's modulus E of 2.5 x 10(11) N/m(2), a density P of 4.2 x 10(3)kg/m(3), and a boronized depth of 5 µm. The ratio E/p of boronized titanium is about 2.5 times tht of titanium. Using boronized titanium diaphragms, wide-range, low-distortion loudspeakers having excellent transient response can be realized.
ER  -